METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE-CONTAINING SOLID MATERIAL HAVING HOLE AND METHOD FOR PRODUCING POLYTETRAFLUOROETHYLENE MOLDED ARTICLE HAVING HOLE

摘要

PROBLEM TO BE SOLVED: To provide a method superior in productivity to conventional ones for producing a polytetrafluoroethylene-molded article having holes.;SOLUTION: The polytetrafluoroethylene-molded article having holes is produced by giving force to a PTFE particle dispersion, that contains a PTFE particle, a surface active agent, and water as a dispersant and to which is introduced air bubbles, so that the particles gather or come into contact with each other and a PTFE-containing solid material having holes originated in the bubble is obtained, and the solid material is properly dried and baked to form the PTFE-molded article.;COPYRIGHT: (C)2008,JPO&INPIT